<?php
/**
 * Project:     Smarty: the PHP compiling template engine
 * File:        Smarty.class.php
 * SVN:         $Id: Smarty.class.php 4478 2011-11-24 21:08:26Z uwe.tews@googlemail.com $
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * For questions, help, comments, discussion, etc., please join the
 * Smarty mailing list. Send a blank e-mail to
 * smarty-discussion-subscribe@googlegroups.com
 *
 * @link http://www.smarty.net/
 * @copyright 2008 New Digital Group, Inc.
 * @author Monte Ohrt <monte at ohrt dot com>
 * @author Uwe Tews
 * @author Rodney Rehm
 * @package Smarty
 * @version 3.1.6
 */

/**
 * define shorthand directory separator constant
 */
if (!defined('DS')) {
	define('DS', DIRECTORY_SEPARATOR);
}

/**
 * set SMARTY_DIR to absolute path to Smarty library files.
 * Sets SMARTY_DIR only if user application has not already defined it.
 */
if (!defined('SMARTY_DIR')) {
	define('SMARTY_DIR', dirname(__FILE__) . DS);
}

/**
 * set SMARTY_SYSPLUGINS_DIR to absolute path to Smarty internal plugins.
 * Sets SMARTY_SYSPLUGINS_DIR only if user application has not already defined it.
 */
if (!defined('SMARTY_SYSPLUGINS_DIR')) {
	define('SMARTY_SYSPLUGINS_DIR', SMARTY_DIR . 'sysplugins' . DS);
}
if (!defined('SMARTY_PLUGINS_DIR')) {
	define('SMARTY_PLUGINS_DIR', SMARTY_DIR . 'plugins' . DS);
}
if (!defined('SMARTY_MBSTRING')) {
	define('SMARTY_MBSTRING', function_exists('mb_strlen'));
}
if (!defined('SMARTY_RESOURCE_CHAR_SET')) {
	// UTF-8 can only be done properly when mbstring is available!
	define('SMARTY_RESOURCE_CHAR_SET', SMARTY_MBSTRING ? 'UTF-8' : 'ISO-8859-1');
}
if (!defined('SMARTY_RESOURCE_DATE_FORMAT')) {
	define('SMARTY_RESOURCE_DATE_FORMAT', '%b %e, %Y');
}

/**
 * register the class autoloader
 */
if (!defined('SMARTY_SPL_AUTOLOAD')) {
	define('SMARTY_SPL_AUTOLOAD', 0);
}

if (SMARTY_SPL_AUTOLOAD && set_include_path(get_include_path() . PATH_SEPARATOR . SMARTY_SYSPLUGINS_DIR) !== false) {
	$registeredAutoLoadFunctions = spl_autoload_functions();
	if (!isset($registeredAutoLoadFunctions['spl_autoload'])) {
		spl_autoload_register();
	}
} else {
	spl_autoload_register('smartyAutoload');
}

/**
 * Load always needed external class files
 */
include_once SMARTY_SYSPLUGINS_DIR.'smarty_internal_data.php';
include_once SMARTY_SYSPLUGINS_DIR.'smarty_internal_templatebase.php';
include_once SMARTY_SYSPLUGINS_DIR.'smarty_internal_template.php';
include_once SMARTY_SYSPLUGINS_DIR.'smarty_resource.php';
include_once SMARTY_SYSPLUGINS_DIR.'smarty_internal_resource_file.php';
include_once SMARTY_SYSPLUGINS_DIR.'smarty_cacheresource.php';
include_once SMARTY_SYSPLUGINS_DIR.'smarty_internal_cacheresource_file.php';

/**
 * This is the main Smarty class
 * @package Smarty
 */
class Smarty extends Smarty_Internal_TemplateBase {

	/**#@+
	 * constant definitions
	 */

	/**
	 * smarty version
	 */
	const SMARTY_VERSION = 'Smarty-3.1.6';

	/**
	 * define variable scopes
	 */
	const SCOPE_LOCAL = 0;
	const SCOPE_PARENT = 1;
	const SCOPE_ROOT = 2;
	const SCOPE_GLOBAL = 3;
	/**
	 * define caching modes
	 */
	const CACHING_OFF = 0;
	const CACHING_LIFETIME_CURRENT = 1;
	const CACHING_LIFETIME_SAVED = 2;
	/**
	 * define compile check modes
	 */
	const COMPILECHECK_OFF = 0;
	const COMPILECHECK_ON = 1;
	const COMPILECHECK_CACHEMISS = 2;
	/**
	 * modes for handling of "<?php ... ?>" tags in templates.
	 */
	const PHP_PASSTHRU = 0; //-> print tags as plain text
	const PHP_QUOTE = 1; //-> escape tags as entities
	const PHP_REMOVE = 2; //-> escape tags as entities
	const PHP_ALLOW = 3; //-> escape tags as entities
	/**
	* filter types
	*/
	const FILTER_POST = 'post';
	const FILTER_PRE = 'pre';
	const FILTER_OUTPUT = 'output';
	const FILTER_VARIABLE = 'variable';
	/**
	 * plugin types
	 */
	const PLUGIN_FUNCTION = 'function';
	const PLUGIN_BLOCK = 'block';
	const PLUGIN_COMPILER = 'compiler';
	const PLUGIN_MODIFIER = 'modifier';
	const PLUGIN_MODIFIERCOMPILER = 'modifiercompiler';

	/**#@-*/

	/**
	 * assigned global tpl vars
	 */
	public static $global_tpl_vars = array();

	/**
	 * error handler returned by set_error_hanlder() in Smarty::muteExpectedErrors()
	 */
	public static $_previous_error_handler = null;
	/**
	 * contains directories outside of SMARTY_DIR that are to be muted by muteExpectedErrors()
	 */
	public static $_muted_directories = array();

	/**#@+
	 * variables
	 */

	/**
	 * auto literal on delimiters with whitspace
	 * @var boolean
	 */
	public $auto_literal = true;
	/**
	 * display error on not assigned variables
	 * @var boolean
	 */
	public $error_unassigned = false;
	/**
	 * look up relative filepaths in include_path
	 * @var boolean
	 */
	public $use_include_path = false;
	/**
	 * template directory
	 * @var array
	 */
	private $template_dir = array();
	/**
	 * joined template directory string used in cache keys
	 * @var string
	 */
	public $joined_template_dir = null;
	/**
	 * joined config directory string used in cache keys
	 * @var string
	 */
	public $joined_config_dir = null;
	/**
	 * default template handler
	 * @var callable
	 */
	public $default_template_handler_func = null;
	/**
	 * default config handler
	 * @var callable
	 */
	public $default_config_handler_func = null;
	/**
	 * default plugin handler
	 * @var callable
	 */
	public $default_plugin_handler_func = null;
	/**
	 * compile directory
	 * @var string
	 */
	private $compile_dir = null;
	/**
	 * plugins directory
	 * @var array
	 */
	private $plugins_dir = array();
	/**
	 * cache directory
	 * @var string
	 */
	private $cache_dir = null;
	/**
	 * config directory
	 * @var array
	 */
	private $config_dir = array();
	/**
	 * force template compiling?
	 * @var boolean
	 */
	public $force_compile = false;
	/**
	 * check template for modifications?
	 * @var boolean
	 */
	public $compile_check = true;
	/**
	 * use sub dirs for compiled/cached files?
	 * @var boolean
	 */
	public $use_sub_dirs = false;
	/**
	 * allow ambiguous resources (that are made unique by the resource handler)
	 * @var boolean
	 */
	public $allow_ambiguous_resources = false;
	/**
	 * caching enabled
	 * @var boolean
	 */
	public $caching = false;
	/**
	 * merge compiled includes
	 * @var boolean
	 */
	public $merge_compiled_includes = false;
	/**
	 * cache lifetime in seconds
	 * @var integer
	 */
	public $cache_lifetime = 3600;
	/**
	 * force cache file creation
	 * @var boolean
	 */
	public $force_cache = false;
	/**
	 * Set this if you want different sets of cache files for the same
	 * templates.
	 *
	 * @var string
	 */
	public $cache_id = null;
	/**
	 * Set this if you want different sets of compiled files for the same
	 * templates.
	 *
	 * @var string
	 */
	public $compile_id = null;
	/**
	 * template left-delimiter
	 * @var string
	 */
	public $left_delimiter = "{";
	/**
	 * template right-delimiter
	 * @var string
	 */
	public $right_delimiter = "}";
	/**#@+
	 * security
	 */
	/**
	 * class name
	 *
	 * This should be instance of Smarty_Security.
	 *
	 * @var string
	 * @see Smarty_Security
	 */
	public $security_class = 'Smarty_Security';
	/**
	 * implementation of security class
	 *
	 * @var Smarty_Security
	 */
	public $security_policy = null;
	/**
	 * controls handling of PHP-blocks
	 *
	 * @var integer
	 */
	public $php_handling = self::PHP_PASSTHRU;
	/**
	 * controls if the php template file resource is allowed
	 *
	 * @var bool
	 */
	public $allow_php_templates = false;
	/**
	 * Should compiled-templates be prevented from being called directly?
	 *
	 * {@internal
	 * Currently used by Smarty_Internal_Template only.
	 * }}
	 *
	 * @var boolean
	 */
	public $direct_access_security = true;
	/**#@-*/
	/**
	 * debug mode
	 *
	 * Setting this to true enables the debug-console.
	 *
	 * @var boolean
	 */
	public $debugging = false;
	/**
	 * This determines if debugging is enable-able from the browser.
	 * <ul>
	 *  <li>NONE => no debugging control allowed</li>
	 *  <li>URL => enable debugging when SMARTY_DEBUG is found in the URL.</li>
	 * </ul>
	 * @var string
	 */
	public $debugging_ctrl = 'NONE';
	/**
	 * Name of debugging URL-param.
	 *
	 * Only used when $debugging_ctrl is set to 'URL'.
	 * The name of the URL-parameter that activates debugging.
	 *
	 * @var type
	 */
	public $smarty_debug_id = 'SMARTY_DEBUG';
	/**
	 * Path of debug template.
	 * @var string
	 */
	public $debug_tpl = null;
	/**
	 * When set, smarty uses this value as error_reporting-level.
	 * @var int
	 */
	public $error_reporting = null;
	/**
	 * Internal flag for getTags()
	 * @var boolean
	 */
	public $get_used_tags = false;

	/**#@+
	 * config var settings
	 */

	/**
	 * Controls whether variables with the same name overwrite each other.
	 * @var boolean
	 */
	public $config_overwrite = true;
	/**
	 * Controls whether config values of on/true/yes and off/false/no get converted to boolean.
	 * @var boolean
	 */
	public $config_booleanize = true;
	/**
	 * Controls whether hidden config sections/vars are read from the file.
	 * @var boolean
	 */
	public $config_read_hidden = false;

	/**#@-*/

	/**#@+
	 * resource locking
	 */

	/**
	 * locking concurrent compiles
	 * @var boolean
	 */
	public $compile_locking = true;
	/**
	 * Controls whether cache resources should emply locking mechanism
	 * @var boolean
	 */
	public $cache_locking = false;
	/**
	 * seconds to wait for acquiring a lock before ignoring the write lock
	 * @var float
	 */
	public $locking_timeout = 10;

	/**#@-*/

	/**
	 * global template functions
	 * @var array
	 */
	public $template_functions = array();
	/**
	 * resource type used if none given
	 *
	 * Must be an valid key of $registered_resources.
	 * @var string
	 */
	public $default_resource_type = 'file';
	/**
	 * caching type
	 *
	 * Must be an element of $cache_resource_types.
	 *
	 * @var string
	 */
	public $caching_type = 'file';
	/**
	 * internal config properties
	 * @var array
	 */
	public $properties = array();
	/**
	 * config type
	 * @var string
	 */
	public $default_config_type = 'file';
	/**
	 * cached template objects
	 * @var array
	 */
	public $template_objects = array();
	/**
	 * check If-Modified-Since headers
	 * @var boolean
	 */
	public $cache_modified_check = false;
	/**
	 * registered plugins
	 * @var array
	 */
	public $registered_plugins = array();
	/**
	 * plugin search order
	 * @var array
	 */
	public $plugin_search_order = array('function', 'block', 'compiler', 'class');
	/**
	 * registered objects
	 * @var array
	 */
	public $registered_objects = array();
	/**
	 * registered classes
	 * @var array
	 */
	public $registered_classes = array();
	/**
	 * registered filters
	 * @var array
	 */
	public $registered_filters = array();
	/**
	 * registered resources
	 * @var array
	 */
	public $registered_resources = array();
	/**
	 * resource handler cache
	 * @var array
	 */
	public $_resource_handlers = array();
	/**
	 * registered cache resources
	 * @var array
	 */
	public $registered_cache_resources = array();
	/**
	 * cache resource handler cache
	 * @var array
	 */
	public $_cacheresource_handlers = array();
	/**
	 * autoload filter
	 * @var array
	 */
	public $autoload_filters = array();
	/**
	 * default modifier
	 * @var array
	 */
	public $default_modifiers = array();
	/**
	 * autoescape variable output
	 * @var boolean
	 */
	public $escape_html = false;
	/**
	 * global internal smarty vars
	 * @var array
	 */
	public static $_smarty_vars = array();
	/**
	 * start time for execution time calculation
	 * @var int
	 */
	public $start_time = 0;
	/**
	 * default file permissions
	 * @var int
	 */
	public $_file_perms = 0644;
	/**
	 * default dir permissions
	 * @var int
	 */
	public $_dir_perms = 0771;
	/**
	 * block tag hierarchy
	 * @var array
	 */
	public $_tag_stack = array();
	/**
	 * self pointer to Smarty object
	 * @var Smarty
	 */
	public $smarty;
	/**
	 * required by the compiler for BC
	 * @var string
	 */
	public $_current_file = null;
	/**
	 * internal flag to enable parser debugging
	 * @var bool
	 */
	public $_parserdebug = false;
	/**
	 * Saved parameter of merged templates during compilation
	 *
	 * @var array
	 */
	public $merged_templates_func = array();
	/**#@-*/

	/**
	 * Initialize new Smarty object
	 *
	 */
	public function __construct()
	{
		// selfpointer needed by some other class methods
		$this->smarty = $this;
		if (is_callable('mb_internal_encoding')) {
			mb_internal_encoding(SMARTY_RESOURCE_CHAR_SET);
		}
		$this->start_time = microtime(true);
		// set default dirs
		$this->setTemplateDir('.' . DS . 'templates' . DS)
		->setCompileDir('.' . DS . 'templates_c' . DS)
		->setPluginsDir(SMARTY_PLUGINS_DIR)
		->setCacheDir('.' . DS . 'cache' . DS)
		->setConfigDir('.' . DS . 'configs' . DS);

		$this->debug_tpl = 'file:' . dirname(__FILE__) . '/debug.tpl';
		if (isset($_SERVER['SCRIPT_NAME'])) {
			$this->assignGlobal('SCRIPT_NAME', $_SERVER['SCRIPT_NAME']);
		}
	}


	/**
	 * Class destructor
	 */
	public function __destruct()
	{
		// intentionally left blank
	}

	/**
	 * <<magic>> set selfpointer on cloned object
	 */
	public function __clone()
	{
		$this->smarty = $this;
	}


	/**
	 * <<magic>> Generic getter.
	 *
	 * Calls the appropriate getter function.
	 * Issues an E_USER_NOTICE if no valid getter is found.
	 *
	 * @param string $name property name
	 * @return mixed
	 */
	public function __get($name)
	{
		$allowed = array(
        'template_dir' => 'getTemplateDir',
        'config_dir' => 'getConfigDir',
        'plugins_dir' => 'getPluginsDir',
        'compile_dir' => 'getCompileDir',
        'cache_dir' => 'getCacheDir',
		);

		if (isset($allowed[$name])) {
			return $this->{$allowed[$name]}();
		} else {
			trigger_error('Undefined property: '. get_class($this) .'::$'. $name, E_USER_NOTICE);
		}
	}

	/**
	 * <<magic>> Generic setter.
	 *
	 * Calls the appropriate setter function.
	 * Issues an E_USER_NOTICE if no valid setter is found.
	 *
	 * @param string $name  property name
	 * @param mixed  $value parameter passed to setter
	 */
	public function __set($name, $value)
	{
		$allowed = array(
        'template_dir' => 'setTemplateDir',
        'config_dir' => 'setConfigDir',
        'plugins_dir' => 'setPluginsDir',
        'compile_dir' => 'setCompileDir',
        'cache_dir' => 'setCacheDir',
		);

		if (isset($allowed[$name])) {
			$this->{$allowed[$name]}($value);
		} else {
			trigger_error('Undefined property: ' . get_class($this) . '::$' . $name, E_USER_NOTICE);
		}
	}

	/**
	 * Check if a template resource exists
	 *
	 * @param string $resource_name template name
	 * @return boolean status
	 */
	public function templateExists($resource_name)
	{
		// create template object
		$save = $this->template_objects;
		$tpl = new $this->template_class($resource_name, $this);
		// check if it does exists
		$result = $tpl->source->exists;
		$this->template_objects = $save;
		return $result;
	}

	/**
	 * Returns a single or all global  variables
	 *
	 * @param object $smarty
	 * @param string $varname variable name or null
	 * @return string variable value or or array of variables
	 */
	public function getGlobal($varname = null)
	{
		if (isset($varname)) {
			if (isset(self::$global_tpl_vars[$varname])) {
				return self::$global_tpl_vars[$varname]->value;
			} else {
				return '';
			}
		} else {
			$_result = array();
			foreach (self::$global_tpl_vars AS $key => $var) {
				$_result[$key] = $var->value;
			}
			return $_result;
		}
	}

	/**
	 * Empty cache folder
	 *
	 * @param integer $exp_time expiration time
	 * @param string  $type     resource type
	 * @return integer number of cache files deleted
	 */
	function clearAllCache($exp_time = null, $type = null)
	{
		// load cache resource and call clearAll
		$_cache_resource = Smarty_CacheResource::load($this, $type);
		Smarty_CacheResource::invalidLoadedCache($this);
		return $_cache_resource->clearAll($this, $exp_time);
	}

	/**
	 * Empty cache for a specific template
	 *
	 * @param string  $template_name template name
	 * @param string  $cache_id      cache id
	 * @param string  $compile_id    compile id
	 * @param integer $exp_time      expiration time
	 * @param string  $type          resource type
	 * @return integer number of cache files deleted
	 */
	public function clearCache($template_name, $cache_id = null, $compile_id = null, $exp_time = null, $type = null)
	{
		// load cache resource and call clear
		$_cache_resource = Smarty_CacheResource::load($this, $type);
		Smarty_CacheResource::invalidLoadedCache($this);
		return $_cache_resource->clear($this, $template_name, $cache_id, $compile_id, $exp_time);
	}

	/**
	 * Loads security class and enables security
	 *
	 * @param string|Smarty_Security $security_class if a string is used, it must be class-name
	 * @return Smarty current Smarty instance for chaining
	 * @throws SmartyException when an invalid class name is provided
	 */
	public function enableSecurity($security_class = null)
	{
		if ($security_class instanceof Smarty_Security) {
			$this->security_policy = $security_class;
			return $this;
		} elseif (is_object($security_class)) {
			throw new SmartyException("Class '" . get_class($security_class) . "' must extend Smarty_Security.");
		}
		if ($security_class == null) {
			$security_class = $this->security_class;
		}
		if (!class_exists($security_class)) {
			throw new SmartyException("Security class '$security_class' is not defined");
		} elseif ($security_class !== 'Smarty_Security' && !is_subclass_of($security_class, 'Smarty_Security')) {
			throw new SmartyException("Class '$security_class' must extend Smarty_Security.");
		} else {
			$this->security_policy = new $security_class($this);
		}

		return $this;
	}

	/**
	 * Disable security
	 * @return Smarty current Smarty instance for chaining
	 */
	public function disableSecurity()
	{
		$this->security_policy = null;

		return $this;
	}

	/**
	 * Set template directory
	 *
	 * @param string|array $template_dir directory(s) of template sources
	 * @return Smarty current Smarty instance for chaining
	 */
	public function setTemplateDir($template_dir)
	{
		$this->template_dir = array();
		foreach ((array) $template_dir as $k => $v) {
			$this->template_dir[$k] = rtrim($v, '/\\') . DS;
		}

		$this->joined_template_dir = join(DIRECTORY_SEPARATOR, $this->template_dir);
		return $this;
	}

	/**
	 * Add template directory(s)
	 *
	 * @param string|array $template_dir directory(s) of template sources
	 * @param string       $key          of the array element to assign the template dir to
	 * @return Smarty current Smarty instance for chaining
	 * @throws SmartyException when the given template directory is not valid
	 */
	public function addTemplateDir($template_dir, $key=null)
	{
		// make sure we're dealing with an array
		$this->template_dir = (array) $this->template_dir;

		if (is_array($template_dir)) {
			foreach ($template_dir as $k => $v) {
				if (is_int($k)) {
					// indexes are not merged but appended
					$this->template_dir[] = rtrim($v, '/\\') . DS;
				} else {
					// string indexes are overridden
					$this->template_dir[$k] = rtrim($v, '/\\') . DS;
				}
			}
		} elseif ($key !== null) {
			// override directory at specified index
			$this->template_dir[$key] = rtrim($template_dir, '/\\') . DS;
		} else {
			// append new directory
			$this->template_dir[] = rtrim($template_dir, '/\\') . DS;
		}
		$this->joined_template_dir = join(DIRECTORY_SEPARATOR, $this->template_dir);
		return $this;
	}

	/**
	 * Get template directories
	 *
	 * @param mixed index of directory to get, null to get all
	 * @return array|string list of template directories, or directory of $index
	 */
	public function getTemplateDir($index=null)
	{
		if ($index !== null) {
			return isset($this->template_dir[$index]) ? $this->template_dir[$index] : null;
		}

		return (array)$this->template_dir;
	}

	/**
	 * Set config directory
	 *
	 * @param string|array $template_dir directory(s) of configuration sources
	 * @return Smarty current Smarty instance for chaining
	 */
	public function setConfigDir($config_dir)
	{
		$this->config_dir = array();
		foreach ((array) $config_dir as $k => $v) {
			$this->config_dir[$k] = rtrim($v, '/\\') . DS;
		}

		$this->joined_config_dir = join(DIRECTORY_SEPARATOR, $this->config_dir);
		return $this;
	}

	/**
	 * Add config directory(s)
	 *
	 * @param string|array $config_dir directory(s) of config sources
	 * @param string key of the array element to assign the config dir to
	 * @return Smarty current Smarty instance for chaining
	 */
	public function addConfigDir($config_dir, $key=null)
	{
		// make sure we're dealing with an array
		$this->config_dir = (array) $this->config_dir;

		if (is_array($config_dir)) {
			foreach ($config_dir as $k => $v) {
				if (is_int($k)) {
					// indexes are not merged but appended
					$this->config_dir[] = rtrim($v, '/\\') . DS;
				} else {
					// string indexes are overridden
					$this->config_dir[$k] = rtrim($v, '/\\') . DS;
				}
			}
		} elseif( $key !== null ) {
			// override directory at specified index
			$this->config_dir[$key] = rtrim($config_dir, '/\\') . DS;
		} else {
			// append new directory
			$this->config_dir[] = rtrim($config_dir, '/\\') . DS;
		}

		$this->joined_config_dir = join(DIRECTORY_SEPARATOR, $this->config_dir);
		return $this;
	}

	/**
	 * Get config directory
	 *
	 * @param mixed index of directory to get, null to get all
	 * @return array|string configuration directory
	 */
	public function getConfigDir($index=null)
	{
		if ($index !== null) {
			return isset($this->config_dir[$index]) ? $this->config_dir[$index] : null;
		}

		return (array)$this->config_dir;
	}

	/**
	 * Set plugins directory
	 *
	 * @param string|array $plugins_dir directory(s) of plugins
	 * @return Smarty current Smarty instance for chaining
	 */
	public function setPluginsDir($plugins_dir)
	{
		$this->plugins_dir = array();
		foreach ((array)$plugins_dir as $k => $v) {
			$this->plugins_dir[$k] = rtrim($v, '/\\') . DS;
		}

		return $this;
	}

	/**
	 * Adds directory of plugin files
	 *
	 * @param object $smarty
	 * @param string $ |array $ plugins folder
	 * @return Smarty current Smarty instance for chaining
	 */
	public function addPluginsDir($plugins_dir)
	{
		// make sure we're dealing with an array
		$this->plugins_dir = (array) $this->plugins_dir;

		if (is_array($plugins_dir)) {
			foreach ($plugins_dir as $k => $v) {
				if (is_int($k)) {
					// indexes are not merged but appended
					$this->plugins_dir[] = rtrim($v, '/\\') . DS;
				} else {
					// string indexes are overridden
					$this->plugins_dir[$k] = rtrim($v, '/\\') . DS;
				}
			}
		} else {
			// append new directory
			$this->plugins_dir[] = rtrim($plugins_dir, '/\\') . DS;
		}

		$this->plugins_dir = array_unique($this->plugins_dir);
		return $this;
	}

	/**
	 * Get plugin directories
	 *
	 * @return array list of plugin directories
	 */
	public function getPluginsDir()
	{
		return (array)$this->plugins_dir;
	}

	/**
	 * Set compile directory
	 *
	 * @param string $compile_dir directory to store compiled templates in
	 * @return Smarty current Smarty instance for chaining
	 */
	public function setCompileDir($compile_dir)
	{
		$this->compile_dir = rtrim($compile_dir, '/\\') . DS;
		if (!isset(Smarty::$_muted_directories[$this->compile_dir])) {
			Smarty::$_muted_directories[$this->compile_dir] = null;
		}
		return $this;
	}

	/**
	 * Get compiled directory
	 *
	 * @return string path to compiled templates
	 */
	public function getCompileDir()
	{
		return $this->compile_dir;
	}

	/**
	 * Set cache directory
	 *
	 * @param string $cache_dir directory to store cached templates in
	 * @return Smarty current Smarty instance for chaining
	 */
	public function setCacheDir($cache_dir)
	{
		$this->cache_dir = rtrim($cache_dir, '/\\') . DS;
		if (!isset(Smarty::$_muted_directories[$this->cache_dir])) {
			Smarty::$_muted_directories[$this->cache_dir] = null;
		}
		return $this;
	}

	/**
	 * Get cache directory
	 *
	 * @return string path of cache directory
	 */
	public function getCacheDir()
	{
		return $this->cache_dir;
	}

	/**
	 * Set default modifiers
	 *
	 * @param array|string $modifiers modifier or list of modifiers to set
	 * @return Smarty current Smarty instance for chaining
	 */
	public function setDefaultModifiers($modifiers)
	{
		$this->default_modifiers = (array) $modifiers;
		return $this;
	}

	/**
	 * Add default modifiers
	 *
	 * @param array|string $modifiers modifier or list of modifiers to add
	 * @return Smarty current Smarty instance for chaining
	 */
	public function addDefaultModifiers($modifiers)
	{
		if (is_array($modifiers)) {
			$this->default_modifiers = array_merge($this->default_modifiers, $modifiers);
		} else {
			$this->default_modifiers[] = $modifiers;
		}

		return $this;
	}

	/**
	 * Get default modifiers
	 *
	 * @return array list of default modifiers
	 */
	public function getDefaultModifiers()
	{
		return $this->default_modifiers;
	}


	/**
	 * Set autoload filters
	 *
	 * @param array $filters filters to load automatically
	 * @param string $type "pre", "output", … specify the filter type to set. Defaults to none treating $filters' keys as the appropriate types
	 * @return Smarty current Smarty instance for chaining
	 */
	public function setAutoloadFilters($filters, $type=null)
	{
		if ($type !== null) {
			$this->autoload_filters[$type] = (array) $filters;
		} else {
			$this->autoload_filters = (array) $filters;
		}

		return $this;
	}

	/**
	 * Add autoload filters
	 *
	 * @param array $filters filters to load automatically
	 * @param string $type "pre", "output", … specify the filter type to set. Defaults to none treating $filters' keys as the appropriate types
	 * @return Smarty current Smarty instance for chaining
	 */
	public function addAutoloadFilters($filters, $type=null)
	{
		if ($type !== null) {
			if (!empty($this->autoload_filters[$type])) {
				$this->autoload_filters[$type] = array_merge($this->autoload_filters[$type], (array) $filters);
			} else {
				$this->autoload_filters[$type] = (array) $filters;
			}
		} else {
			foreach ((array) $filters as $key => $value) {
				if (!empty($this->autoload_filters[$key])) {
					$this->autoload_filters[$key] = array_merge($this->autoload_filters[$key], (array) $value);
				} else {
					$this->autoload_filters[$key] = (array) $value;
				}
			}
		}

		return $this;
	}

	/**
	 * Get autoload filters
	 *
	 * @param string $type type of filter to get autoloads for. Defaults to all autoload filters
	 * @return array array( 'type1' => array( 'filter1', 'filter2', … ) ) or array( 'filter1', 'filter2', …) if $type was specified
	 */
	public function getAutoloadFilters($type=null)
	{
		if ($type !== null) {
			return isset($this->autoload_filters[$type]) ? $this->autoload_filters[$type] : array();
		}

		return $this->autoload_filters;
	}

	/**
	 * return name of debugging template
	 *
	 * @return string
	 */
	public function getDebugTemplate()
	{
		return $this->debug_tpl;
	}

	/**
	 * set the debug template
	 *
	 * @param string $tpl_name
	 * @return Smarty current Smarty instance for chaining
	 * @throws SmartyException if file is not readable
	 */
	public function setDebugTemplate($tpl_name)
	{
		if (!is_readable($tpl_name)) {
			throw new SmartyException("Unknown file '{$tpl_name}'");
		}
		$this->debug_tpl = $tpl_name;

		return $this;
	}

	/**
	 * creates a template object
	 *
	 * @param string $template the resource handle of the template file
	 * @param mixed $cache_id cache id to be used with this template
	 * @param mixed $compile_id compile id to be used with this template
	 * @param object $parent next higher level of Smarty variables
	 * @param boolean $do_clone flag is Smarty object shall be cloned
	 * @return object template object
	 */
	public function createTemplate($template, $cache_id = null, $compile_id = null, $parent = null, $do_clone = true)
	{
		if (!empty($cache_id) && (is_object($cache_id) || is_array($cache_id))) {
			$parent = $cache_id;
			$cache_id = null;
		}
		if (!empty($parent) && is_array($parent)) {
			$data = $parent;
			$parent = null;
		} else {
			$data = null;
		}
		// default to cache_id and compile_id of Smarty object
		$cache_id = $cache_id === null ? $this->cache_id : $cache_id;
		$compile_id = $compile_id === null ? $this->compile_id : $compile_id;
		// already in template cache?
		if ($this->allow_ambiguous_resources) {
			$_templateId = Smarty_Resource::getUniqueTemplateName($this, $template) . $cache_id . $compile_id;
		} else {
			$_templateId = $this->joined_template_dir . '#' . $template . $cache_id . $compile_id;
		}
		if (isset($_templateId[150])) {
			$_templateId = sha1($_templateId);
		}
		if ($do_clone) {
			if (isset($this->template_objects[$_templateId])) {
				// return cached template object
				$tpl = clone $this->template_objects[$_templateId];
				$tpl->smarty = clone $tpl->smarty;
				$tpl->parent = $parent;
				$tpl->tpl_vars = array();
				$tpl->config_vars = array();
			} else {
				$tpl = new $this->template_class($template, clone $this, $parent, $cache_id, $compile_id);
			}
		} else {
			if (isset($this->template_objects[$_templateId])) {
				// return cached template object
				$tpl = $this->template_objects[$_templateId];
				$tpl->parent = $parent;
				$tpl->tpl_vars = array();
				$tpl->config_vars = array();
			} else {
				$tpl = new $this->template_class($template, $this, $parent, $cache_id, $compile_id);
			}
		}
		// fill data if present
		if (!empty($data) && is_array($data)) {
			// set up variable values
			foreach ($data as $_key => $_val) {
				$tpl->tpl_vars[$_key] = new Smarty_variable($_val);
			}
		}
		return $tpl;
	}


	/**
	 * Takes unknown classes and loads plugin files for them
	 * class name format: Smarty_PluginType_PluginName
	 * plugin filename format: plugintype.pluginname.php
	 *
	 * @param string $plugin_name    class plugin name to load
	 * @param bool   $check          check if already loaded
	 * @return string |boolean filepath of loaded file or false
	 */
	public function loadPlugin($plugin_name, $check = true)
	{
		// if function or class exists, exit silently (already loaded)
		if ($check && (is_callable($plugin_name) || class_exists($plugin_name, false))) {
			return true;
		}
		// Plugin name is expected to be: Smarty_[Type]_[Name]
		$_name_parts = explode('_', $plugin_name, 3);
		// class name must have three parts to be valid plugin
		// count($_name_parts) < 3 === !isset($_name_parts[2])
		if (!isset($_name_parts[2]) || strtolower($_name_parts[0]) !== 'smarty') {
			throw new SmartyException("plugin {$plugin_name} is not a valid name format");
			return false;
		}
		// if type is "internal", get plugin from sysplugins
		if (strtolower($_name_parts[1]) == 'internal') {
			$file = SMARTY_SYSPLUGINS_DIR . strtolower($plugin_name) . '.php';
			if (file_exists($file)) {
				require_once($file);
				return $file;
			} else {
				return false;
			}
		}
		// plugin filename is expected to be: [type].[name].php
		$_plugin_filename = "{$_name_parts[1]}.{$_name_parts[2]}.php";

		// loop through plugin dirs and find the plugin
		foreach($this->getPluginsDir() as $_plugin_dir) {
			$names = array(
			$_plugin_dir . $_plugin_filename,
			$_plugin_dir . strtolower($_plugin_filename),
			);
			foreach ($names as $file) {
				if (file_exists($file)) {
					require_once($file);
					return $file;
				}
				if ($this->use_include_path && !preg_match('/^([\/\\\\]|[a-zA-Z]:[\/\\\\])/', $_plugin_dir)) {
					// try PHP include_path
					if (($file = Smarty_Internal_Get_Include_Path::getIncludePath($file)) !== false) {
						require_once($file);
						return $file;
					}
				}
			}
		}
		// no plugin loaded
		return false;
	}

	/**
	 * Compile all template files
	 *
	 * @param string $extension file extension
	 * @param bool $force_compile force all to recompile
	 * @param int $time_limit
	 * @param int $max_errors
	 * @return integer number of template files recompiled
	 */
	public function compileAllTemplates($extention = '.tpl', $force_compile = false, $time_limit = 0, $max_errors = null)
	{
		return Smarty_Internal_Utility::compileAllTemplates($extention, $force_compile, $time_limit, $max_errors, $this);
	}

	/**
	 * Compile all config files
	 *
	 * @param string $extension file extension
	 * @param bool $force_compile force all to recompile
	 * @param int $time_limit
	 * @param int $max_errors
	 * @return integer number of template files recompiled
	 */
	public function compileAllConfig($extention = '.conf', $force_compile = false, $time_limit = 0, $max_errors = null)
	{
		return Smarty_Internal_Utility::compileAllConfig($extention, $force_compile, $time_limit, $max_errors, $this);
	}

	/**
	 * Delete compiled template file
	 *
	 * @param string $resource_name template name
	 * @param string $compile_id compile id
	 * @param integer $exp_time expiration time
	 * @return integer number of template files deleted
	 */
	public function clearCompiledTemplate($resource_name = null, $compile_id = null, $exp_time = null)
	{
		return Smarty_Internal_Utility::clearCompiledTemplate($resource_name, $compile_id, $exp_time, $this);
	}


	/**
	 * Return array of tag/attributes of all tags used by an template
	 *
	 * @param object $templae template object
	 * @return array of tag/attributes
	 */
	public function getTags(Smarty_Internal_Template $template)
	{
		return Smarty_Internal_Utility::getTags($template);
	}

	/**
	 * Run installation test
	 *
	 * @param array $errors Array to write errors into, rather than outputting them
	 * @return boolean true if setup is fine, false if something is wrong
	 */
	public function testInstall(&$errors=null)
	{
		return Smarty_Internal_Utility::testInstall($this, $errors);
	}

	/**
	 * Error Handler to mute expected messages
	 *
	 * @link http://php.net/set_error_handler
	 * @param integer $errno Error level
	 * @return boolean
	 */
	public static function mutingErrorHandler($errno, $errstr, $errfile, $errline, $errcontext)
	{
		$_is_muted_directory = false;

		// add the SMARTY_DIR to the list of muted directories
		if (!isset(Smarty::$_muted_directories[SMARTY_DIR])) {
			$smarty_dir = realpath(SMARTY_DIR);
			Smarty::$_muted_directories[SMARTY_DIR] = array(
                'file' => $smarty_dir,
                'length' => strlen($smarty_dir),
			);
		}

		// walk the muted directories and test against $errfile
		foreach (Smarty::$_muted_directories as $key => &$dir) {
			if (!$dir) {
				// resolve directory and length for speedy comparisons
				$file = realpath($key);
				$dir = array(
                    'file' => $file,
                    'length' => strlen($file),
				);
			}
			if (!strncmp($errfile, $dir['file'], $dir['length'])) {
				$_is_muted_directory = true;
				break;
			}
		}

		// pass to next error handler if this error did not occur inside SMARTY_DIR
		// or the error was within smarty but masked to be ignored
		if (!$_is_muted_directory || ($errno && $errno & error_reporting())) {
			if (Smarty::$_previous_error_handler) {
				return call_user_func(Smarty::$_previous_error_handler, $errno, $errstr, $errfile, $errline, $errcontext);
			} else {
				return false;
			}
		}
	}

	/**
	 * Enable error handler to mute expected messages
	 *
	 * @return void
	 */
	public static function muteExpectedErrors()
	{
		/*
		 error muting is done because some people implemented custom error_handlers using
		 http://php.net/set_error_handler and for some reason did not understand the following paragraph:

		 It is important to remember that the standard PHP error handler is completely bypassed for the
		 error types specified by error_types unless the callback function returns FALSE.
		 error_reporting() settings will have no effect and your error handler will be called regardless -
		 however you are still able to read the current value of error_reporting and act appropriately.
		 Of particular note is that this value will be 0 if the statement that caused the error was
		 prepended by the @ error-control operator.

		 Smarty deliberately uses @filemtime() over file_exists() and filemtime() in some places. Reasons include
		 - @filemtime() is almost twice as fast as using an additional file_exists()
		 - between file_exists() and filemtime() a possible race condition is opened,
		 which does not exist using the simple @filemtime() approach.
		 */
		$error_handler = array('Smarty', 'mutingErrorHandler');
		$previous = set_error_handler($error_handler);

		// avoid dead loops
		if ($previous !== $error_handler) {
			Smarty::$_previous_error_handler = $previous;
		}
	}

	/**
	 * Disable error handler muting expected messages
	 *
	 * @return void
	 */
	public static function unmuteExpectedErrors()
	{
		restore_error_handler();
	}
}

/**
 * Smarty exception class
 * @package Smarty
 */
class SmartyException extends Exception {
}

/**
 * Smarty compiler exception class
 * @package Smarty
 */
class SmartyCompilerException extends SmartyException  {
}

/**
 * Autoloader
 */
function smartyAutoload($class)
{
	$_class = strtolower($class);
	$_classes = array(
        'smarty_config_source' => true,
        'smarty_config_compiled' => true,
        'smarty_security' => true,
        'smarty_cacheresource' => true,
        'smarty_cacheresource_custom' => true,
        'smarty_cacheresource_keyvaluestore' => true,
        'smarty_resource' => true,
        'smarty_resource_custom' => true,
        'smarty_resource_uncompiled' => true,
        'smarty_resource_recompiled' => true,
	);

	if (!strncmp($_class, 'smarty_internal_', 16) || isset($_classes[$_class])) {
		include SMARTY_SYSPLUGINS_DIR . $_class . '.php';
	}
}

?>
